import React, { Component } from 'react';
// const 修饰的常量放在类的外面
const t = () => "黑马程序员"
class HelloWord extends Component {
constructor(props) {
super(props);
this.state = { };
}
render() {
return (
// 这里是执行t()方法
<div>Hello Word {t()}</div>
);
}
}
export default HelloWord;
